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samples/vfs: check whether flag was raised

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For string options the kernel will raise the corresponding flag only if
the string isn't empty. So check for the flag.

Link: https://lore.kernel.org/r/20250204-work-mnt_idmap-statmount-v2-3-007720f39f2e@kernel.org
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Christian Brauner <brauner@kernel.org>
This commit is contained in:
Christian Brauner 2025-02-04 12:27:48 +01:00
parent 37c4a9590e
commit a496dfecbc
No known key found for this signature in database
GPG key ID: 91C61BC06578DCA2
1 changed files with 5 additions and 4 deletions
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9
samples/vfs/test-list-all-mounts.c
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@ -138,10 +138,11 @@ next:
printf("mnt_id:\t\t%" PRIu64 "\nmnt_parent_id:\t%" PRIu64 "\nfs_type:\t%s\nmnt_root:\t%s\nmnt_point:\t%s\nmnt_opts:\t%s\n\n",
(uint64_t)stmnt->mnt_id,
(uint64_t)stmnt->mnt_parent_id,
stmnt->str + stmnt->fs_type,
stmnt->str + stmnt->mnt_root,
stmnt->str + stmnt->mnt_point,
stmnt->str + stmnt->mnt_opts);
(stmnt->mask & STATMOUNT_FS_TYPE) ? stmnt->str + stmnt->fs_type : "",
(stmnt->mask & STATMOUNT_MNT_ROOT) ? stmnt->str + stmnt->mnt_root : "",
(stmnt->mask & STATMOUNT_MNT_POINT) ? stmnt->str + stmnt->mnt_point : "",
(stmnt->mask & STATMOUNT_MNT_OPTS) ? stmnt->str + stmnt->mnt_opts : "");
free(stmnt);
}
}